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| boards:ecb:4uart-usb:start [2021/07/29 22:14] – Revision from 2021-07-29 | boards:ecb:4uart-usb:start [2026/06/15 12:16] (current) – external edit 127.0.0.1 |
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| /* Imported from Wayback Machine | /* Imported from Wayback Machine |
| Original URL : https://retrobrewcomputers.org/doku.php?id=boards:ecb:4uart-usb:start | Original URL : https://retrobrewcomputers.org/doku.php?id=boards%3Aecb%3A4uart-usb%3Astart |
| Snapshot date: 2021-07-29 | Snapshot date: 2023-12-27 |
| Generator : wayback-archiver | Generator : wayback-archiver |
| */ | */ |
| |
| ====== 4UART-USB ====== | |
| |
| The ECB 4UART-USB board provides two RS232 level serial interfaces and two USB serial interfaces through FT232RL add on boards. | |
| |
| {{[[lib:plugins:ckgedit:fckeditor:userfiles:image:boards:ecb:4uart-usb:ecb-4uart-usb.png]] | |
| |
| ===== Overview ===== | ===== Overview ===== |
| |
| Testing indicates that the TL16C754B chips are very sensitive to the relative timing of CSx# and IOW#. CSx# must fall 10ns before IOW#. One way to achieve this is to fit 74ALS139 or 74AHCT139 in place of 74LS139, and use 74LS on the rest of the board (with the exception of the 74F00). SC16C754B does not appear to suffer from this sensitivity. | Testing indicates that the TL16C754B chips are very sensitive to the relative timing of CSx# and IOW#. CSx# must fall 10ns before IOW#. One way to achieve this is to fit 74ALS139 or 74AHCT139 in place of 74LS139, and use 74LS on the rest of the board (with the exception of the 74F00). SC16C754B does not appear to suffer from this sensitivity. |
| | |
| | ====== Software ====== |
| | |
| | This board is supported under ROMWBW. It can be enabled by adding the following line to your configuration file: |
| | |
| | <code code> |
| | UART4 .SET TRUE |
| | </code> |
| | |
| | The following shows the typical ROMWBW output where UART1 - UART4 are the 4UART-USB ports. |
| | |
| | <code code> |
| | RomWBW HBIOS v3.1.1-pre.124, 2021-10-10 |
| | |
| | .... |
| | |
| | UART0: IO=0x68 16550A MODE=38400,8,N,1 FIFO |
| | UART1: IO=0xC0 16650 MODE=38400,8,N,1 FIFO AFC |
| | UART2: IO=0xC8 16650 MODE=38400,8,N,1 FIFO AFC |
| | UART3: IO=0xD0 16650 MODE=38400,8,N,1 FIFO AFC |
| | UART4: IO=0xD8 16650 MODE=38400,8,N,1 FIFO AFC |
| | </code> |
| | |
| | It can be seen that the default port address starts at 0xC0 and is occupying the range 0xC0 to 0xDF. The corresponding jumpers on the 4uart-usb board are: |
| | |
| | <code code> |
| | 0x - Ax : No Jumper |
| | Cx : Jumpered |
| | Ex : No Jumper |
| | </code> |
| | |
| | Additionally, the enhanced capability of the chip FIFO buffer and AFC (automatic flow control) are recognized. Note that the driver only supports the default 7.3728 crystal. |
| |
| ===== Errata ===== | ===== Errata ===== |
| ===== Resources ===== | ===== Resources ===== |
| |
| ^Filename ^Size ^Updated ^ | ^Filename ^Size ^Updated ^ |
| |[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:4uart-usb:ecb-4uart-1.0-003-sch.pdf|ECB-4UART-1.0-003-sch.pdf]] |414Kb|2016-03-30| | |[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:4uart-usb:ecb-4uart-1.0-003-sch.pdf|ECB-4UART-1.0-003-sch.pdf]] |414Kb|2016-03-30| |
| |[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:4uart-usb:ecb-4uart-1.0-003-brd.pdf|ECB-4UART-1.0-003-brd.pdf]] |491Kb|2016-03-30| | |[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:4uart-usb:ecb-4uart-1.0-003-brd.pdf|ECB-4UART-1.0-003-brd.pdf]] |491Kb|2016-03-30| |
| |[[https://retrobrewcomputers.org/lib/exe/fetch.php?tok=b0bd73&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fexe%2Ffetch.php%3Fmedia%3Dboards%3Aecb%3A4uart-usb%3Aecb-4uart-1.0-003-parts_list.jpg|ECB-4UART-1.0-003-parts_list.jpg]]|292Kb|2016-03-30| | |[[https://retrobrewcomputers.org/lib/exe/fetch.php?tok=7aa6a2&media=https%3A%2F%2Fretrobrewcomputers.org%2Flib%2Fexe%2Ffetch.php%3Ftok%3D3dce8c%26media%3Dhttps%3A%2F%2Fretrobrewcomputers.org%2Flib%2Fexe%2Ffetch.php%3Ftok%3D5762a7%26media%3Dhttps%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fexe%2Ffetch.php%3Ftok%3D378489%26media%3Dhttps%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fexe%2Ffetch.php%3Ftok%3Df77792%26media%3Dhttps%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fexe%2Ffetch.php%3Ftok%3D0785e6%26media%3Dhttps%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fexe%2Ffetch.php%3Ftok%3Db0bd73%26media%3Dhttps%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fexe%2Ffetch.php%3Fmedia%3Dboards%3Aecb%3A4uart-usb%3Aecb-4uart-1.0-003-parts_list.jpg|ECB-4UART-1.0-003-parts_list.jpg]]|292Kb|2016-03-30| |
| |[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:4uart-usb:ecb-4uart-1.0_manual.pdf|ECB-4UART-1.0_manual.pdf]] |385Kb|2016-03-07| | |[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:4uart-usb:ecb-4uart-1.0_manual.pdf|ECB-4UART-1.0_manual.pdf]] |385Kb|2016-03-07| |
| |[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:4uart-usb:tl16c754b.pdf|TL16C754B datasheet]] (PDF) |675Kb|2004-06-01| | |[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:4uart-usb:tl16c754b.pdf|TL16C754B datasheet]] (PDF) |675Kb|2004-06-01| |
| |[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:4uart-usb:tl16c754-errata.pdf|TL16C754-errata]] (PDF) |41Kb |2006-08-01| | |[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:4uart-usb:tl16c754-errata.pdf|TL16C754-errata]] (PDF) |41Kb |2006-08-01| |
| |[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:4uart-usb:tl-sc16c754b.pdf|SC16C754B datasheet]] (PDF) |259Kb|2008-10-08| | |[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:4uart-usb:tl-sc16c754b.pdf|SC16C754B datasheet]] (PDF) |259Kb|2008-10-08| |
| |[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:4uart-usb:max249-page.pdf|MAX249 page]] (PDF) |66Kb |2001-08-01| | |[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:4uart-usb:max249-page.pdf|MAX249 page]] (PDF) |66Kb |2001-08-01| |
| | |[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:4uart-usb:4uart-1.0-002-mfg.zip|ECB-4UART-1.0-002-mfg.zip]] (Gerbers) |283Kb|2016-02-28| |
| last update: 30-Mar-2016:::::John Coffman | |
| |
| \\ | last update: 30-Mar-2016:::::John Coffman (Gerbers on 2022-10-13) |
| |
